Hello! Welcome to shenyang jingui foundry official website!
Shenyang jingui casting factory
Email address: firstname.lastname@example.org
Address: no. 15, liaozhong commercial street, shenyang city
Website construction and maintenance: 18202401465
The casting process of ductile iron casting is not very different from that of other cast iron casting processes. Is the first to meet the requirements of smelting (ductile iron have different grades and mechanical performance requirements) of molten iron, then add the nodulizing agent (usually with rare earth ferrosilicon magnesium alloys in our country, the brand of 5-8, also useful for other brands), according to the composition of the molten iron, iron water amount and production experience, then rongqing nodularizer after adding nucleating agent (typically 75 ferrosilicon, and nodulizing agent amount on similar), stir well, then pouring castings, under normal circumstances, after spheroidizing molten iron must be within 15 minutes after pouring, otherwise it will cause spheroidizing recession (contain calcium, barium and strontium nodularizer can slow recession) in a certain extent. Nodularizer and the addition of nucleating agent method are many, have different habit, each manufacturer has joined in furnace, a chute to join, join found at the bottom of the bag and inoculation in type and so on, and so on, each have each way.
If not able to get qualified ductile iron products, casting can only be scrapped, as a burden to the next casting back, but because of nodularizer, inoculant contain this element, make its silicon content exceeds bid, so can only be limited to join, or add scrap to dilute reuse of silicon, etc.